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Andru [333]
2 years ago
15

Will give brainliest or however its spelled THis will have to things you need to help me with!! I need help now because its due

at 2:30 and where I live its 1:50. 19 points PLEASE HELPPPP!!!!! Tomas got a score of 75% correct on an exam. There were 24 questions on the exam. What number of questions did Tomas get correct?
A
6
B
12
C
16
D
18 Read the question and type your response in the box provided. Your response will be saved automatically.
The Jackson family is driving from Boston to New York for a summer vacation trip. So far, they have driven 84 miles which is 40% of the total miles of their trip. How many miles is the Jackson’s trip from Boston to New York?

Explain how you solved this problem in the box below. Include a description of your strategy and your answer in your explanation.
Mathematics
2 answers:
belka [17]2 years ago
7 0
I think the answer is 18 have a nice day!
alexdok [17]2 years ago
3 0

Answer:

18

Step-by-step explanation:

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Mike has $68 more than Min. Mike has $94. How much money does Min have?
yaroslaw [1]
94 MINUS 68 EQUAL 26 DOLLARS MIN HAS
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3 years ago
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Arrange the following numbers from smallest to largest: 3.04, 3<br> 10<br> 3.024
andre [41]

Answer:

3, 3.024, 3.04, 10

I'm sorry if I misunderstood.

Good luck mate! :)

Please add Brainliest if you'd like, not that it matters.

Remember to try your best every day!

8 0
3 years ago
I don't get this at all some one explain please
Lisa [10]
The answer is B u put them all in a fraction and put them in simpliest form and all the answers in B come up to 7 over 8
4 0
3 years ago
Suppose that you are in charge of evaluating teacher performance at a large elementary school. One tool you have for this evalua
Strike441 [17]

Answer:

a) Standard error = 2

b) Range = (76.08, 83.92)

c) P=0.69

d) Smaller

e) Greater

Step-by-step explanation:

a) When we have a sample taken out of the population, the standard error of the mean is calculated as:

\sigma_m=\dfrac{\sigma}{\sqrt{n}}=\dfrac{10}{\sqrt{25}}=\dfrac{10}{5}=2

where n is te sample size (n=25) and σ is the population standard deviation (σ=10).

Then, the standard error of the classroom average score is 2.

b) The calculations for this range are the same that for the confidence interval, with the difference that we know the population mean.

The population standard deviation is know and is σ=10.

The population mean is M=80.

The sample size is N=25.

The standard error of the mean is σM=2.

The z-value for a 95% confidence interval is z=1.96.

The margin of error (MOE) can be calculated as:

MOE=z\cdot \sigma_M=1.96 \cdot 2=3.92

Then, the lower and upper bounds of the confidence interval are:

LL=M-t \cdot s_M = 80-3.92=76.08\\\\UL=M+t \cdot s_M = 80+3.92=83.92

The range that we expect the average classroom test score to fall 95% of the time is (76.08, 83.92).

c) We can calculate this by calculating the z-score of X=79.

z=\dfrac{X-\mu}{\sigma}=\dfrac{79-80}{2}=\dfrac{-1}{2}=-0.5

Then, the probability of getting a average score of 79 or higher is:

P(X>79)=P(z>-0.5)=0.69146

The approximate probability that a classroom will have an average test score of 79 or higher is 0.69.

d) If the sample is smaller, the standard error is bigger (as the square root of the sample size is in the denominator), so the spread of the probability distribution is more. This results then in a smaller probability for any range.

e) If the population standard deviation is smaller, the standard error for the sample (the classroom) become smaller too. This means that the values are more concentrated around the mean (less spread). This results in a higher probability for every range that include the mean.

6 0
3 years ago
If r and s represent two numbers, write the following:
Tanzania [10]

Answer:

hope it helps. good day .in case of any question please ask.

4 0
2 years ago
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